Cable traction drive operator



Nov; 18, 1958 Filed Jan. 27, 1955 R R. DOEG 2,850,872

CABLE TRACTION DRIVE OPERATOR 5 Sheets-Shet 1 PAUL E. D056.

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R. M 7 m J M a v w United States Patent CABLE TRACTION DRIVE OPERATOR Paul R. Doeg, Lynbrook, N. Y., assignor to The Peelle Company, Brooklyn, N. Y., a corporation of New York Application January 27, 1955, Serial No. 484,449

4 Claims. (Cl. 268-59) of which is secured either to each guide rail of the door or to the elevator shaft wall and transmitting power to the door by driving the sheaves over which the door chains run. Another conventional type of operator is secured to the shaft wall above the door opening and located between the door guides, with power being transmitted therefrom through driving chains to the door sheaves. Either of the above mentioned conventional types of operators require additional space in the elevator shaft.

The principal object of the present invention is the provision of an operator which is mounted in andis carried by one of the door sections without requiring more space in the elevator shaft than is normally occupied by the door. 1 e

A second object of the invention is the provision of an operating unit which lends itself to doors in the process of manufacture or to doors already in operation.

, Other objects and particular objects and advantages of the invention will become more apparent in the course of the following description, and that which .is new Will be pointed out in the appended claims, with reference being had to the accompanying drawings forming a part hereof, in which:

Figure 1 is a shaft side elevation of a counterbalanced elevator door showing an operator mounted therein and embodying the principles of the invention, and showing the door in closed position.

Figure 2 is a shaft elevation of the door similar to that shown in Figure 1, but with the door being shown in open position. A

Figure 3 is a partial elevation of the lower door section and showing an enlarged elevation of the operator.

Figure 4 is a detail section, taken on line 4-4 of Figure 3.

Figure 5 is a shaft side elevation showing the operator and its mounting plate.

Figure 6 is a detail vertical section through the operator and its mounting plate, with the same being taken on line 6-6 of Figure 5.

Figure 7 is a top plan view of the operator, with the door being shown therein in broken lines.

Figure 8 is a detail elevation of one of the cable deadends with the same being shown secured to a door guide rail.

Figure 9 is a section through a portion of the guide rail and showing a plan view-of the cable dead-end device, taken on line 9-9 of Figure 8.

Figure 10 is a side elevation of the cable dead-end fastening device, taken from line 10-10 of Figure 8.

Figure 11 is a shaft side elevation of the idler sheaves on the left .side of the door, with the sheaves on the right "ice side of the door being similar and with the sheaves being mounted on and carried by the door trucking angle.

Figure 12.is a partial section through the door trucking angle and showing a side elevation of the idler sheaves, and with the section being taken on line 12-12 of Figure 11. Figure 13 is a topv plan view of the idler sheaves, taken from line 13-13 of Figure 11. 7 Figure 14 is a shaft side elevation of one of the cable tightening studs. Figure 15 is a side elevation of the cable-tightening stud, taken from line 15-15 of Figure 14, and showing the connection thereof with the door guide rail. v I Figure 16 is a partial section taken through the door guide rail and showing a top plan view of the cabletightening stud, as taken on line 16-16 of Figure 14; Figure 17 is a room side elevation of the operator mounting plate. j Like characters of reference designate like members throughout the several views of the, drawings.

In order that the device, theconstruction, and the operation thereof may be more fully understood. and appreciated, I will now take up a detailed description thereof, in which the same will be more fully set forth.

Referring now to the drawings in detail, 20 and 21 are upper and lower door sections respectively which have guide shoes 22 secured to each vertical edge thereof and which are adapted to engage guide angles 23 which are secured to the shaft wall construction. Upper door section 20 is provided with a chain fastener 24 secured to each vertical edge with the same being located near the lower end "of the-door section. The lower door section 21 has a trucking angle 25 across the upper edge thereof and which is secured thereto and carried thereby: Extensions of trucking angle 25 provide fasten ings for chain rods 26' which have the upper ends thereof connected with the respective chains 27, and with the lower ends of the chain rods being threaded for vertical adjustment. Each of the chains 27 run over a respective sheave 28.

In the opening movements of the door, upper section 20 moves upwardly between guides 23 while the lower "door section m'oves downwardly to a point where the trucking angle is at the same level as the building sill and, at which time, the lower edge of the upper door section is on a level with or slightly above the opening lintel.

In order to provide electric operation to the door, I have provided an electric operator which consists of a motor mounting plate 29-which is adapted to be rigidly secured to the room face of the lower door section 21 byrneans of'bolts 30 extending through'the door panel and the trucking angle. Before the mounting plate is secured to the door panel, a reversible electric motor 31 is secured 'on the shaft face of the plate. Motor 31 has pinion gear 32 extending therefrom whch is adaptedto be in constant mesh with the teeth of gear 33. Drums 34 and 35 are preferably formed integrally with gear 33 and provide reception for driving cables, as will be more clearly set forth hereinafter. Gear 33, together with the cable-receiving drums34 and 35, is rotatably secured to portions of the motor housing by means .of shaft 36 having a head 37 formed thereon. A groove 381s formed around shaft 36 forengagement therewith by "the inner end of screw 39 and thereby locking the gear 33 in its relation with the motor. A bearing 40 is provided on the shaft for gear 33.

I have provided a pair of grooved pulleys 41 and 42 I near the left end of trucking angle 25 and have also provided a like pair of pulleys 43 and 44 near the right end of the'trucking angle. .Each pair of these pulleys is secured to a pulley plate 45 by means of a shaft 3 46, and with the plates 45 being secured to the trucking angle by means of bolts 4 V t 1 v Upper cable-fastening means are provided'for each side of the door and consist of a cable dead-end plate 48, as shown more clearly in Figures 8, 9 and, 10, having a bore formed vertlcally therethrough for the reception of an end of a cable. Each of the plates 48 is secured to its respective guide rail 23 by means of bolts '50.

A combined cable fastener and tightener is provided at each side of the door and secured to a respective guide angle 23, as more clearly shown in Figures 14, and 16. Each of the combined fasteners and tighteners s composed of a bored lug 51 which is formed integral- Iy with or welded to a plate 52, and with the plate being secured to its guide angle by means of bolts 50. A threaded tightener 54 extends vertically through the lug 5 1 and is provided with a cable-receiving head 55 formed on the upper end thereof. An adjusting nut 56 provides means for adjusting the threaded tightener with relation to lug 51.

Movement-of the door by means of the operator is obtained through friction driven cables 57 and 58. Each of the cables has one end thereof secured into a cablereceiving dead-end 48 while the other end of each cable is secured to a cable-receiving head 55. One end of cable 57 is secured to cable dead-end 48 at the right side of the door with the cable extending down and under pulley 43 and then twice around drum 34 with the cable then extending toward the left side of the door and over pulley 41 and downward to the respective cabletightener head 55. Cable 58 has one end thereof secured to cable dead-end 48 at the left side of the door and extends downwardly and under pulley 42 with the same being wrapped twice around drum 35, then over pulley 44 and down to the respective cable-tightener head 55 on the right side of the door. f 7

Members 59 are spacers or shims securedto the door side of the motor mounting plate 29 and provide means spacing the plate from the door core and are of substantially the same thickness asthe door frame angle 65.

Numerals 60 (Figure 17) designate the holes formed through plate 29 for securing the motor thereto. Numerals 61 indicate holes through the mounting plate for securing the plate through the trucking angle by means of bolts 30, and numerals 62 indicate holes throughthe plate for securing the plate through the door core.

Numerals 63 designate an electric cable extending from the motor 31 to junction box 64 which is connected with wiring of the elevator control circuit.

Operation When the door is in closed position as shown in Figure 1, the motor is energized to open the door. The motor operates to rotate gear 33 in the direction indicated by the arrow in Figure 1, the action of which creates a pull on the portion of cable 57 at the left side of the door and on the portion of cable 58 on the right side of the door, with the cables running around their respective drums 34 and and toward their respective cable dead-ends 48. This action of the drums on the cables causes the lower section of the door to move downwardly to its open position and, by.reason of the upper door sectionbeing connected with the lower door section by means of the chain rods 26 and chains 27, causes the upper door section to move upwardly to its open position.

When the door is in open positionas shown in Figpre 2, the motor is energized and operates in a reverse direction from the opening movement with the motor pinion transmitting a reverse motion to gear 33 and drums 34 and 35 as shown by the arrow in Figure 2.

Uponreversingthe motor,.the drums create a pull on cable 57 from the right side of the door and on cable 58 from the left side of the door until the door is brought to its closed position by reason of the travel of the cables around their respective drums.

The motor is operated through the usual electrical reversing circuits which are not shown in the drawings as the same provide no part in the mechanical movements of the operator other than supplying current to the operator motor.

Adjusting nuts 56 provide means for adjusting the tension on the cables 57 and 58 to maintain the necessary driving friction of the cables around the drums 34 and 35 to prevent undue slippage therebetween.

A plate (not shown) is provided on the shaft face of the door to cover the operating unit after the same is installed to prevent accidental contact therewith by the operator of the elevator car.

It is to be understood that, while the invention has been shown in its presently preferred form, minor changes may be made therein, insofar as the changes may fall within the scope of the appended claims, and that I am not to be limited to the specific form and arrangement of the several parts comprising the invention.

Having now shown and described the invention, what I claim, and desire to secure by Letters Patent of the United States, is:

1. In combination with a counterbalanced elevator door comprising a pair of oppositely movable door sections mountedone above the other between a pair of spaced-apart guide rails for vertical movement with the door sections being connected together by means of flexible chains running over respective sheaves, a cable traction drive operator secured into the lower door section, said operator being composed of a reversible electric motor geared to a pair of cable drums, a cable passed around and engaging one of the cable drums and having one end thereof secured to one of the spacedapart guide rails with the opposite end of the cable being secured to a cable-tightening device secured to the opposite guide rail, a second cable passed around and engaging a second cable drum with one end of the second cable being secured to an opposite guide rail from the first-mentioned fastening of the first cable and with the other end of the second cable being secured to a cable-tightening device secured to an opposite guide rail from the second end of the first-mentioned cable, with the rotation of the electric motor being transferred through gears to the cable drums, with the rotation of the cable drums within the engaging cables transmitting vertical movement to the lower door section, and with the movement of the lower door section being reversely transferred to the upper door section simultaneously therewith.

2. A cable traction drive operator mounted in and carried by a lower door section of a counterbalanced elevator door, said doorbeing composed of an upper section and a lower section, both of said sections being mounted between a pair of spaced-apart guide rails for vertical movement therebetween with means connecting the door I sections arranged to transfer the movement of one of the door sections to the other door section in reverse order, said cable traction drive operator being composed of an electric motor geared to a pair of cable drums, a cable passing around one of the drums with one end of thecablc being secured to a cable fastener located on the right guide rail and with the opposite end of. the cable being secured into a cable-tightening device located on the left guide rail, with the second cable passing around a second drum withone end of the second cable being secured to a cable fastener located onthe left guide rail and with the opposite end of the second cable'being secured into a cable-tightening device on the right guide rail, with the rotation of the cable drums by the operator transmitting vertical motion to the operatorc'arrying door section by means of the cables being passed around the rotating cable drums, and with motion of the operator-carrying door section being transferred to the other door section in reverse order by means of the connections between the door sections.

3. In combination with a multiple section door composed of an upper section and a lower section both being vertically movable between spaced-apart guide rails with the opening and closing movements of one of the door sections being transferred to the other door section in reverse order by means of connections therebetween, a cable traction drive operator secured into one of the door sections and carried thereby, said operator being geared to a pair of cable drums also carried by the door section, a cable engaging one of the cable drums with one end of the cable being secured to a right guide rail adjacent the upper door section and with the opposite end of the cable being secured to a cable-tightening device located on the left guide rail adjacent the lower door section, a second cable engaging the second cable drum with one end of the second cable being secured to a left guide rail adjacent the upper door section and with the opposite end of the second cable being secured to a cable-tightening device located on the right guide rail adjacent the lower door section, with the rotation of the cable drums by the operator transmitting vertical motion to the operator-carrying door section by means of the cables being passed around the rotating cable drums, and with motion of the operator-carrying door section being transferred to the other door section in reverse order by means of the connections between the door sections.

4. In combination with a counterbalanced elevator door comprising a pair of oppositely-disposed sections vertically movable in opposite directions and connected by means of flexible chains running over sheaves positioned on spaced-apart guide rail members, with one of the sections being located above the other and with each of the sections being arranged for vertical movement between the spaced-apart guides, a cable traction drive operator located substantially within and carried by the lower door section, a pair of cable drums carried by a gear member and forming a part thereof with the gear member being engaged by a pinion gear formed on a projecting end of an operating motor shaft, a cable wrapped about one of the cable drums with one end of one of the cables being secured to a fixed member located adjacent the left side of the upper door section and the other end thereof being secured to a cable-tightening device located adjacent the right side of the lower door section, a second cable wrapped about a second cable drum and having one end thereof secured to a fixed member located adjacent the right side of the upper door section and with the other end thereof being secured to a cable-tightening device located adjacent the left side of the lower door section, with rotation of the motor being transferred to the cable drums through their gear member by the engagement therewith with the pinion gear of the motor shaft, with the rotation of the cable drums'transmitting movement to the lower door section through the wrapping of the cables on their drums, and with the movement of the lower door section being transferred to the upper door section through the flexible chains running over respective sheaves.

References Cited in the file of this patent UNITED STATES PATENTS 198,718 Weston Dec. 25, 1877 1,075,067 Sandurskyj Oct. 7, 1913 1,872,043 Peelle Aug. 16, 1932 1,872,175 Peelle Aug. 16, 1932 1,904,009 Peelle Apr. 18, 1933 1,906,677 Waldman May 2, 1933 1,927,559 Talen Sept. 19, 1933 1,932,198 Talen Oct. 24, 1933 1,952,681 Peelle Mar. 27, 1934 2,121,906 Dunn June28, 1938 2,175,906 McCormick Oct. 10, 1939 2,475,015 Croker et al. July 5, 1949 2,603,482 Gonzales July 15, 1952' 2,628,090 Verdier Feb. 10, 1953 2,673,316 Doeg et a1 Mar. 23, 1954 2,700,542 Geyer Jan. 25, 1955 2,703,236 Verdier Mar. 1, 1955 

